JP2001090852A - Connecting structure of distribution controlling means for multi-valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-valve capable of performing more safely a replacement work of a distribution controlling means in a condition without intervention of fluid pressure or fluid leak. SOLUTION: A multi-body 11 can distribute fluid by mounting a distribution controlling means 2 at a position corresponding to each distribution controlling means 2, and comprises a part connecting valve 13 adapted to block the fluid by removing the distribution controlling means 2. On each distribution controlling means 2, sealing means 8, 9 and 10 are mounted at a position relative to the multi-body 11 such that they form sealing structure with the multi-body 11 before opening the part connecting valve 13 when the distribution controlling means 2 is mounted and that hey can cancel the sealing structure after closing the part connecting valve 13 when the distribution controlling means 2 is removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure of a multi-valve flow control means in which flow control means for controlling fluid flow to a container is attached to the container via a multi-body.

[0002]

2. Description of the Related Art For example, as a system for supplying LP gas (fluid) to each consumer side, a consumer bulk supply system as shown in FIGS. 5 and 6 is known. This system includes a storage tank (closed container) GB for storing LP gas, and various flow control means 2 attached to the storage tank GB and controlling flow to the storage tank GB. Of these flow control means 2, for example, 21 is the LP in the storage tank GB.
This is a gas extraction valve for extracting gas to the customer side.
Reference numeral 2 denotes a pressure equalizing valve for equalizing the pressure of the LP gas supplied from the tank of the lorry vehicle with the pressure in the storage tank GB. Reference numeral 23 denotes L when the pressure in the storage tank GB abnormally increases.
This is a safety valve for releasing P gas to the atmosphere.

[0003] Each of the above-mentioned flow control means 2 forms a hole in the upper surface of a cylindrical body of the storage tank GB, and a neck (connecting means) 3 formed by welding an annular boss to the hole. It can be attached to the storage tank GB. FIG. 6 shows an example of a pipe screw type in which the gas extraction valve 21 of the flow control means 2 is connected to the neck 3 using a pipe screw. In addition, the flange surface provided on the gas extraction valve 21 is
There is also a flange type in which the gas extraction valve 21 is connected to the neck 3 by fixing with a bolt in accordance with the upper surface of the gasket.

In FIGS. 5 and 6, reference numeral 4 denotes
A protector that covers the entire flow control means 2 is connected to the gas extraction valve 21 and has a function of adjusting the supply pressure of the LP gas within a specified pressure range.

[0005]

However, in the conventional consumer bulk supply system, the flow control means 2 such as the gas take-off valve 21, the pressure equalizing valve 22, and the safety valve 23 are individually provided in the storage tank GB. Drilling and neck 3 are required by the number of flow control means 2. In addition, each neck 3 has a different size according to each flow control means 2 and a mixture of a pipe screw type and a flange type. For this reason, there has been a problem that the cost increases due to an increase in the number of processing and assembly steps and an increase in the number of parts.

Further, a problem occurs in the flow control means 2 such as the gas extraction valve 21 and the pressure equalizing valve 22, so that there is a problem that the residual gas inside the storage tank GB must be recovered for replacement or repair. .

Further, when the flow control means 2 is replaced or repaired, if the supply of gas cannot be stopped during that time, a temporary supply facility is also required.

In view of the above, the inventors of the present invention filed a prior application (Japanese Patent Application No. 10-340600) by connecting a plurality of flow control means to a multibody, reducing the number of processing and assembly steps and reducing the number of parts. We have proposed a multi-valve that can reduce costs by reducing the cost.

In view of the above, the present invention has been made in view of the fact that in the replacement work of the flow control means in this multi-valve, it is necessary to eliminate the involvement of fluid pressure in the multi-body and leakage of the fluid as much as possible to contribute to the safety of the replacement work. Accordingly, it is an object of the present invention to provide a connection structure of the flow control means of the multi-valve, which allows the flow control means to be replaced more safely with no involvement of fluid pressure and no leakage of the fluid.

[0010]

In order to achieve the above-mentioned object, according to the first aspect of the present invention, a plurality of flow control means for controlling the flow of a fluid to and from a container are provided, and a connecting means provided on the container is provided. And a connection structure of a multi-valve flow control means having a multi-body attached to the outside of the container, wherein the multi-body is provided with flow control means at a position corresponding to each flow control means. A partial connection valve is provided which allows fluid to flow between the multi-body and the flow control means, and shuts off the flow of fluid from the multi-body to the flow control means when the flow control means is removed. In each of the flow control means, a seal means for forming a sealed structure with the multi-body, when the flow control means is attached, forms the sealed structure before opening the partial connection valve. When removing the flow control means, characterized in that attached to the relative position of the multi-body capable of releasing the sealing structure after closure of the partial connecting valve.

Therefore, according to the first aspect of the present invention, the flow control means is attached at first when the partial connection valve is closed.
It can be performed in a state where the fluid pressure in the container does not participate at all, and in the middle of the installation, a sealing structure is formed by the sealing means, and then the partial connection valve is opened, so that the flow control means is attached to the multi-body. Therefore, leakage of the fluid in the container to the outside at the time of attachment can be prevented.

Further, the flow control means can be removed while maintaining the sealing structure by the sealing means, and the partial connection valve is closed at the final stage of the removal. In this state, the flow control means is opened. The fluid existing between the partially connected valve and the flow control means in the closed state can be released to the outside, and thereafter, in a state where the sealing structure is released and the fluid pressure in the container is not involved at all, The flow control means can be removed from the multibody. At this time, since the release of the fluid due to the opening of the flow control means is a small amount existing between the partially connected valve and the flow control means in the closed state, the influence on the other can be completely ignored.

According to a second aspect of the present invention, there is provided a connecting structure of the multi-valve flow control means according to the first aspect,
The sealing means, when the flow control means is mounted on the multi-body, is positioned so as to have a mounting depth position substantially equal to the opening / closing stroke of the partial connection valve, and is provided on an outer peripheral portion of the flow control means. It is characterized by being attached.

According to the second aspect of the present invention, the obstruction state of the partial connection valve can be confirmed by visually recognizing the sealing means exposed from the multi-body. Must be opened to release the fluid present between the closed partial connection valve and the flow control means to the outside. At this time, the timing for opening the flow control means can be accurately measured.

According to a third aspect of the present invention, there is provided a connecting structure of the multi-valve flow control means according to the first or second aspect, wherein one of the plurality of flow control means is a container. The safety valve is configured to prevent the internal pressure from becoming abnormally high, and the safety valve is configured to include a blow valve that discharges fluid in a connection portion with the multi-body to the outside. I do.

According to the third aspect of the present invention, the safety valve can be removed while maintaining the sealing structure by the sealing means, and the partial connection valve is closed at the final stage of the removal. Open the valve,
The fluid existing between the partially connected valve and the safety valve in the closed state can be released to the outside, and then the safety valve is released in a state where the sealing structure is released and the fluid pressure in the container is not involved at all. Can be removed from the multibody.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described.
This will be described with reference to FIGS. Elements common to those of the conventional example shown in FIGS. 5 and 6 are denoted by the same reference numerals, and description thereof will be simplified.

The multi-valve 1 of this embodiment has a neck (connection means) 3 provided by welding to a storage tank (container) GB for storing LP gas in a consumer bulk supply system.
And a multi-body 11 attached to the outside of the storage tank GB via the neck 3. The multi-body 11 has three flow control means 2 for controlling the flow of fluid to and from the storage tank GB via the neck 3. (Plural) can be attached.

When the flow control means 2 is attached to the multi-body 11 at a position corresponding to each flow control means 2, the flow of fluid between the multi-body 11 and the flow control means 2 is enabled, When the flow control means 2 is removed,
A partial connection valve 13 that shuts off the flow of fluid from the multi-body 11 to the flow control means 2 is provided.

Each of the flow control means 2 has a sealing means 8 (9, 9) for forming a sealed structure with the multi-body 11.
10), when the flow control means 2 is mounted, the sealing structure is formed before the partial connection valve 13 is opened.
Is mounted at a position relative to the multi-body 11 where the sealing structure can be released after the partial connection valve 13 is closed.

More specifically, the multi-body 11 has a main flow passage 11a which communicates with the inside of the storage tank GB when attached to the neck 3, and is formed so as to protrude to the left and right, respectively, in communication with the main flow passage 11a. The first connecting pipe 5 and the second connecting pipe 6 are integrally formed with a third connecting pipe 7 which is communicated with the main flow path 11a and extends in the axial direction.
Each of the connecting pipes 5, 6, and 7 has a main flow path 11a.
The valve seats 5a, 6a, and 7a are respectively arranged at positions facing the.
Each of the partial connection valves 13 provided with a valve element that comes in contact with and separates from the main flow path 11a is mounted by biasing the valve element in the direction of each of the valve seats 5a, 6a, and 7a by springs 14, 15, and 16. Have been.

A gas take-off valve 21, a pressure equalizing valve 22, and a safety valve 23 as flow control means 2 are attached to each of the connecting pipes 5, 6, and 7 from the outside.

As shown in FIG. 2, the gas extraction valve 21 has an open / close handle 21a mounted on one end of a cylindrical main body, and a male screw formed on the other end of the cylindrical main body on the outer peripheral portion. A connecting end 21b, an O-ring 8 as sealing means fitted into an annular groove formed along the outer periphery of the cylindrical body slightly above the connecting end 21b, and the O-ring 8
A lock nut 17 screwed into a screw portion engraved on the outer periphery of the cylindrical main body at a slightly upper position, and a union nut 1 on a cylindrical connecting portion protruding laterally from an intermediate portion of the cylindrical main body.
9 and an adapter spindle 26 connected through an adapter 9. When the opening / closing handle 21a is closed, the gas extraction valve 21 has its connection end 21b screwed into the female screw portion of the first connection pipe 5, and the lock nut 1
7 is attached. In this mounting state, the partial connection valve 13 is in an open state in which the partial connection valve 13 is pushed by the tip of the connection end 21b against the spring force of the spring 14 and is separated from the valve seat 5a, and the O-ring 8 is The sealing structure is formed in close contact with the inner peripheral wall of the connecting pipe 5. In this attachment state, the adjuster (the adjuster 24 in FIG. 6) is attached to the adapter spindle 26.

Further, as shown in FIG.
Male coupling 2 for pressure equalization formed at one end of the cylindrical body
0, a coupling end 22b formed on the other end of the cylindrical main body, and having an external thread engraved on the outer periphery thereof, and a cylindrical main body slightly centered from the coupling end 22b. O-ring 9 as a sealing means fitted in an annular groove formed along the outer periphery of the O-ring 9 and a screw portion engraved on the outer periphery of the cylindrical main body slightly closer to the center than the O-ring 9. A lock nut 18 and an opening / closing handle 22a attached to a cylindrical connecting portion that is formed so as to protrude obliquely from an intermediate portion of the cylindrical main body. The equalizing male coupling 20 is connected to a female coupling attached to a hose on the lorry vehicle side, and the LP from the lorry vehicle tank (not shown) to the multi-body 11 with the open / close lever of the female coupling opened. It has a check valve function that allows gas flow and prevents backflow from the multi-body 11 to the tank of the lorry when the open / close lever of the female coupling is closed.

The equalizing valve 22 is provided with an open / close handle 22.
a with the connection end 22b closed to the second connection pipe 6
And screwed onto the lock nut 18 to attach it. In this mounting state, the partial connection valve 13 is connected to the connection end 2 against the spring force of the spring 15.
The O-ring 9 is pressed by the tip of 2b and is separated from the valve seat 6a, and the O-ring 9 is in close contact with the inner peripheral wall of the second connecting pipe 6 to form a sealed structure.

Further, as shown in FIG. 4, the safety valve 23 has a connecting end 23a formed at the lower end and having an external thread engraved on the outer periphery, and formed along the outer periphery of a portion slightly above the connecting end 23a. O-ring 10 as sealing means fitted in the formed annular groove, and a fluid discharge passage 27 formed through a pipe wall slightly above the O-ring 10 and below the valve body 28. And a blow valve 25 provided to be able to open and close. And safety valve 2
Reference numeral 3 denotes a state in which the blow valve 25 is closed, and the connection end 23a thereof is screwed to the female screw portion of the third connection pipe 7 to be attached. In this mounted state, the partial connection valve 13 is in an open state in which the partial connection valve 13 is pushed by the tip of the connection end 23a against the spring force of the spring 16 and is separated from the valve seat 7a.
Further, the O-ring 10 is in close contact with the inner peripheral wall of the third connection pipe 7 to form a sealing structure.

The other components of the gas extraction valve 21, the pressure equalizing valve 22, and the safety valve 23 are configured in the same manner as in the prior art. Also, each O-ring 8, 9, and 10
Is used in a state where grease is applied. FIG.
Reference numeral 12 denotes a gasket.

Preferably, O is used as a sealing means.
When the flow control means 2 is mounted on the multi-body 11, the rings 8 (9, 10) are positioned so as to have a mounting depth position substantially equal to the opening / closing stroke of the partial connection valve 13. Is attached to the outer periphery. At this time, the opening and closing stroke of the partial connection valve 13 is controlled by the attachment and detachment of the flow control means 2.
Corresponds to the reciprocating distance, and the mounting depth position corresponds to the approach distance of the flow control means 2 from the outer surface of the multi-body 11 in the mounted state to the multi-body 11.

Specifically, as shown in FIG. 1, in the case of the O-ring 8, when the gas extraction valve 21 is attached to the first connection pipe 5, the opening / closing stroke S of the partial connection valve 13 is 13 and the valve seat 5a, the mounting depth position D is the distance from the outer open end face of the first connecting pipe 5 to the O-ring 8 mounted on the gas outlet valve 21, and the O-ring 8 indicates that the mounting depth position D is the partial connection valve 13
Is positioned so as to be substantially equal to the opening / closing stroke S of the valve and is attached to the gas extraction valve 21. Actually, the relationship between the mounting depth position D and the opening / closing stroke S is determined so that the sealing structure of the O-ring 8 is released some time after the partial connection valve 13 is closed. This relationship is the same for the O-rings 9 and 10.

According to this configuration, the obstruction state of the partial connection valve 13 can be confirmed by visually recognizing the O-ring 8 (9, 10) exposed from the multi-body 11, so that the flow control means 2 can be used. At the time of removal, it is necessary to open the flow control means 2 and release the fluid present between the closed partial connection valve 13 and the flow control means 2 to the outside. The timing of opening can be accurately measured.

Next, the removal of each flow control means 2 will be described.

The gas outlet valve 21 has an open / close handle 2
1a is closed, and the gas in the pipe on the outlet side is completely burned or discharged to a safe place. Thereafter, the union nut 19 is loosened, and the adjuster and the like together with the adapter spindle 26 are removed. Thereafter, the lock nut 17 is slightly loosened, and the gas extraction valve 21 itself is loosened until a part of the O-ring 8 is seen from the outer opening edge of the first connection pipe 5. In this state, the sealing structure by the O-ring 8 is still maintained.
By visually recognizing a part of the O-ring 8, it can be confirmed that the valve body of the partial connection valve 13 is in close contact with the valve seat 5a and the partial connection valve 13 has been closed. Next, the opening / closing handle 21a is opened to release the gas between the partially connected valve 13 and the gas extraction valve 21 in the closed state to the outside. When the release of the gas stops, the gas extraction valve 21 is connected to the first connection pipe. Remove from 5. In the process of removing the gas extraction valve 21,
The sealing structure by the O-ring 8 is released. Gas extraction valve 2
After the removal of 1, leakage of gas in the storage tank GB can be prevented by the partially connected valve 13 in the closed state.

In the pressure equalizing valve 22, the opening / closing handle 22a is closed, the lock nut 18 is slightly loosened, and the pressure equalizing valve 22 itself is moved until a part of the O-ring 9 can be seen from the outer opening edge of the second connecting pipe 6. loosen. In this state, the sealing structure by the O-ring 9 is still maintained. By visually recognizing a part of the O-ring 9, it can be confirmed that the valve body of the partial connection valve 13 is in close contact with the valve seat 6a and the partial connection valve 13 is in a closed state. Next, the coupling connecting portion 22C
A female coupling (not shown) is connected to the female coupling via an equalizing male coupling 20, and the handle of the female coupling is operated, and the opening / closing handle 22a is opened to connect the partial connection valve 13 and the equalizing valve 22 in the closed state. The gas in between is discharged to the outside, and when the discharge of this gas stops, after removing the female coupling, the pressure equalizing valve 22 is removed from the second connection pipe 6. In the process of removing the pressure equalizing valve 22, the sealing structure by the O-ring 9 is released. After the pressure equalizing valve 22 is removed, leakage of gas in the storage tank GB can be prevented by the partially connected valve 13 in the closed state.

Further, in the safety valve 23, the safety valve 23 itself is loosened using an appropriate jig until a part of the O-ring 10 can be seen from the outer opening edge of the third connecting pipe 7. In this state, the sealing structure by the O-ring 10 is still maintained. By visually recognizing a part of the O-ring 10, it can be confirmed that the valve body of the partial connection valve 13 is in close contact with the valve seat 7a and the partial connection valve 13 is in a closed state. Next, the blow valve 25 is loosened to open the fluid discharge passage 27, and the gas between the partially connected valve 13 and the safety valve 23 in the closed state is discharged to the outside. When the discharge of the gas stops, the safety valve 23 is released. Remove from the third connecting pipe 7. In the process of removing the safety valve 23, the sealing structure by the O-ring 10 is released. After the safety valve 23 is removed, leakage of gas in the storage tank GB can be prevented by the partially connected valve 13 in the closed state.

As described above, the connection structure of the flow control means 2 of the multi-valve 1 in this embodiment is
Can be initially performed in a state where the partial connection valve 13 is closed and the gas pressure in the container GB is not involved at all, and a sealing structure is provided by an O-ring 8 (9, 10) during the installation. After that, the partial connection valve 13 is opened and the flow control means 2 is attached to the multi-body 11, so that the gas in the container GB can be prevented from leaking to the outside at the time of attachment.

Further, the flow control means 2 can be removed while maintaining the sealed structure by the O-rings 8 (9, 10), and the partial connection valve 13 is closed at the final stage of the removal. To open the flow control means 2,
The gas existing between the partially connected valve 13 and the flow control means 2 in the closed state can be released to the outside, and thereafter, the sealed structure is released and the gas pressure in the container GB does not participate at all. Then, the distribution control means 2 is
Can be removed from. At this time, the distribution control means 2
The release of gas by opening of the valve is caused by the closed partial connection valve 13.
Since it is a small amount existing between the flow control means 2 and the flow control means 2, the influence on the others can be completely ignored.

Also, in this multi-valve 1, three flow control means 2 for controlling the flow to the storage tank GB are attached to the multi-body 11, so that one hole is formed in the storage tank GB. Then, the neck 3 is welded to this portion, and the multi-body 11 is attached to the neck 3, so that the three flow control means 2 can flow through the storage tank GB. Therefore, the storage tank GB
And the man-hours required for assembling the multi-body 11 to the neck 3 and the number of parts such as the neck 3 can be reduced. Can be reduced. Therefore, cost can be reduced.

Also, since only one neck 3 is required,
The sealing performance of the storage tank GB can be improved. That is, since the number of locations where the neck 3 is welded to the storage tank GB is reduced, the reliability of the sealing performance of the storage tank GB is significantly improved, and the safety of the storage tank GB can be significantly improved.

Further, by mounting the plurality of flow control means 2 to the multi-body 11, the structure for mounting the flow control means 2 to the storage tank GB can be simplified and the structure can be reduced in size. Can be. Moreover, due to the miniaturization, the protector 4 that is legally determined to cover the entire distribution control means 2 is provided.
There is also an advantage that (see FIGS. 5 and 6) can be reduced.

Further, the safety valve 23 is a multi-body 11
, It is possible to prevent not only the pressure in the storage tank GB but also the pressure on each flow control means 2 and its extension line from becoming abnormally high. For example, it is possible to prevent the flow path on the downstream side through the gas extraction valve 21 from becoming abnormally high in pressure.

Further, in the multi-valve 1,
For each part to which each flow control means 2 is connected, a partial connection valve 1
Since the flow control means 3 is provided, even if any flow control means 2 is removed, it is possible to prevent the outflow of the LP gas from that part, so that the flow control means 2 can be exchanged more easily.

Although the storage tank GB for storing the LP gas is shown as the container, the container may be a container for storing another gas or liquid. Further, the neck 3 is provided at the upper surface position of the storage tank GB, and the multi-valve 1 is provided so as to be located above the storage tank GB. However, the neck 3 and the multi-valve 1 may be provided at any position of the storage tank GB. .

The number of the flow control means 2 connected to the multi-body 11 is not limited to three as in the above-described embodiment, but may be two or four or more.

[0044]

As described in detail above, according to the first aspect of the present invention, when the flow control means is attached, the fluid pressure in the container is not involved at all when the partial connection valve is initially closed. In the middle of the installation, a sealing structure is formed by the sealing means, then the partial connection valve is opened, the flow control means can be mounted on the multi-body, and when the flow control means is removed. Can be performed while maintaining the sealing structure by the sealing means, and at the final stage of removal, the partial connection valve is closed, and in this state, the flow control means is opened, and the closed partial connection valve and the flow control The fluid existing between the means can be released to the outside, and thereafter, the sealing structure is released, and the flow control means is operated in a state where the fluid pressure in the container is not involved at all. Can be removed from the Chibodi can provide a coupling structure of a flow control means of the multi-valve replacement work flow control means in the absence of involvement and fluid leakage of the fluid pressure can be more safely.

According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, the closed state of the partial connection valve can be confirmed by visually recognizing the sealing means exposed from the multibody. Therefore, based on this confirmation, it is possible to accurately measure the timing of opening the flow control means for discharging the fluid, and to further secure the replacement work.

According to the third aspect of the present invention, in addition to the effects of the first and second aspects of the present invention, the safety valve is provided with a blow valve. The fluid existing between the partially connected valve and the safety valve in the closed state can be discharged to the outside, whereby the safety valve can be replaced without any fluid pressure involved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a connection structure of a flow control means of a multi-valve as one embodiment of the present invention.

FIG. 2 is a sectional view of a gas extraction valve used in the connection structure of FIG.

FIG. 3 is a sectional view of a pressure equalizing valve used in the connection structure of FIG. 1;

FIG. 4 is a sectional view of a safety valve used in the connection structure of FIG. 1;

FIG. 5 is a plan view showing the state of various flow control means attached to a storage tank in a consumer bulk supply system shown as a conventional example.

FIG. 6 is a side view showing the state of various flow control means attached to the storage tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Multi valve 2 Flow control means 3 Neck (connection means) 8, 9, 10 O-ring (seal means) 11 Multibody 13 Partial connection valve 21 Gas extraction valve (flow control means) 22 Equalization valve (flow control means) 23 Safety valve (Flow control means) 25 Blow valve D Mounting depth position S Opening / closing stroke (of partial connection valve) GB container

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kenichi Shintani 1-2 Ginza Nishi, Chuo-ku, Tokyo Miyairi Valve Works F-term (reference) 3H067 AA01 AA32 BB08 BB14 CC35 DD03 DD12 DD22 FF11 FF17 GG02

Claims (3)

[Claims] 1. A multi-valve flow control means having a plurality of flow control means for controlling the flow of a fluid to and from a container and having a multi-body attached to the outside of the container via a connecting means provided on the container. The multi-body, when the flow control means is attached to the position corresponding to each flow control means, enables the flow of fluid between the multi-body and the flow control means, When the control means is removed, a partial connection valve for shutting off the flow of fluid from the multi-body to the flow control means is provided, and each flow control means forms a sealed structure with the multi-body. Sealing means, when mounting the flow control means, forms the sealing structure before opening the partial connection valve,
The connection structure of the flow control means of the multi-valve, wherein the flow control means is attached at a position relative to the multi-body, which can release the sealing structure after closing the partial connection valve when the flow control means is removed. . 2. The connecting structure of the flow control means of the multi-valve according to claim 1, wherein said sealing means is capable of controlling an opening / closing stroke of said partial connection valve when said flow control means is attached to said multi-body. A connection structure for a flow control means of a multi-valve, characterized in that the flow control means is positioned at substantially the same mounting depth position and is mounted on an outer peripheral portion of the flow control means. 3. The connection structure of the flow control means of the multi-valve according to claim 1 or 2, wherein one flow control means of the plurality of flow control means is:
It is configured with a safety valve that prevents the pressure in the container from becoming abnormally high, and the safety valve includes a blow valve that discharges a fluid in a connection portion with the multibody to the outside. The connection structure of the flow control means of the multi-valve.